some variables in kernel-artitact-names.bbclass not in glossary

crawling through the kernel code and tasks and classes and here:

https://git.openembedded.org/openembedded-core/tree/meta/classes-recipe/kernel-artifact-names.bbclass

there are some variables that are not in the variables glossary:

  KERNEL_ARTIFACT_LINK_NAME
  KERNEL_ARTIFACT_BIN_EXT
  KERNEL_DTB_BIN_EXT
  KERNEL_FIT_BIN_EXT

in fact, there are several references in the glossary to
KERNEL_ARTIFACT_LINK_NAME, but not by ref, just with monospaced font,
so it seems like it merits an entry.

  and, no, i can't submit a patch since i'm still learning how these
things are used.

rday